Insulator support



' April 16, 1935. K P, MALM Er AL 1,998,052

' INSULATOR SUPPORT Filed Sept. 16, 1931 y [men/i075,-

Patented Apr'. 16, 193s 1,998,052

UNITED sTATEs PATENT OFFICE INSULATOR- SUPPORT Knute P. Malm and GeorgeWilliam Black, Clairtn, and William Oscar Henrlckson, Homestead, Pa.

Application septeininn-y 16,1931, serial No. 563,178

3 claims. (o1. 191-32) This invention relates to insulator supports. asquared head I4* and embedded in a squared or hanger brackets forelectrical conductors'` and block I6 of insulating material, said blockbeing i is particularly adapted for supporting collector formed with aboss or male projectiOn I1 adaptrails or bars in electric railway,tramway, crane ed to extend into reCeSS 20 in a blOCk I3 0f 111- 5 andlike installations. sulating material. The block I6 is provided with 5The present invention has in view the provia groove I liab surroundingthe projection Il and sion of a hanger bracket or support of the classadapted to receive a circular projection 20 Surspeciiied which is simplein construction, may be rounding the recess 20 of the block I8. readilyinstalled, is comprised of parts which are The Second block I8 isDIOVidedWith an Over- 10 easily assembled and interchangeable, isreadily Size bore I9 through which the bolt I4 extends. 1o adjustedwithout danger of electrical shock, and The grOOve I6 and IeCeSS 20 Willbe Supplied which at the same time serves as a reliable sup- With 8quantity 0f plastic insulating Compound port for a collector rail orbar, prior to assembling the hanger bracket assembly 'Ihe hanger bracketof this invention is es- SO that When the Darts are assembled the jointpecially adapted for installations with severe between the blocks I5 andI8 Will be effectively 15 operating conditions where moisture, acid va-Sealed by a body 0f the COmDOllndpors, dust, heat and smoke causegrounding, The channe15 Serves toprevent the accumulebreakage ormisalinementl with consequent intion of dirt and moisture on the lowerblock I8 terference with operation. and lessens the liability of theparts becoming 20 Numerous other advantageous features will grounded.A20 become apparent in View of the subsequent de- In mounting theimproved hanger bracket 01 scription, taken-in connection with thedrawing, support, the hanger sections 8 may be applied on whereinFigure1 is a. view in section and Side each side of the collector rail 'I andaround the elevation of a support Vor hanger bracket embolt I4 andclamped together, the grip exerted Q5 bodying the features of theinvention; thereby being loose to permit expansion and 25 Figure 2 is asimilar view looking from the contraction of the bar. 'I'he hangerbracket asopposite side of the support; sembly may be easily tightenedon the channel g Figure 3 is a top plan of the support or hanger bracket5 by simply grasping and turning the I bracket; and squared insulatorblock I6, ,as will be obvious 30 Figure 4 is a detail view of one of theparts. from the drawing. The duplicate sections or 30 The referencenumeral 5 designates a main halves 8 which form the hanger proper arein- -i support or bracket which is here shown as of terchangeable andeasily installed and adjusted.

inverted channel shape and formed with open- The parts of the entireassembly may be readings 6 at points where it is desired to install oneily made from stock material and parts kept in of the improved hangerbrackets. stock and renewed as found necessary and de- A collector railof the T-type is indicated at 1 sirable. The block I6 being made ofinsulating in a horizontally disposed position and supportmaterial, thisoperation may be performed withed by the herein described hanger bracketasout danger of shock by the electric current.

sembly. We claim 40 The hanger bracket assembly comprises a pair 1. Ahanger bracket assembly comprising a 40 of cooperating hanger sections 8which form the main recessed supporting bracket provided with hangerproper, said sections being formed with depending flanges, an insulatingblock adapted to lower inwardly turned enges or lugs 9 which rest onsaid bracket and formed with a projection are adapted to support thecollector rail l. The depending into said recess and with a groove 5hanger sections 8 may be made of cast or malsurroundmg said projection,another insulating 45 leable iron or any desired material, as foundblock positioned below seid bracket, and formed convenient, the twohalves being held together with a recess adapted to receive saidprojecin clamped relation by a bolt I0, lock washer tion and with e,circular projection adapted to I2 and nut I3- extend up through saidbracket and into said The hanger sections 8 are suspended from thegroove of said first named block, means forming 50 main support orbracket 5 by means of e henger a sealing connection between said blocks,a bolt I 4 having a nut I5 applied on its lower exhanger boltl havingone extremity embedded in tremity, said nut iitting into a recessedportion Said mst named bleek and its Opposite exformed in the saidhanger sections. tremity loosely passed through said second The upperend of the bolt I4 is provided with named block and having e, nutthreaded there. 55

on, and a split hanger suspended from said bolt, said hanger beingformed with a recessed portion adapted to receive said nut.

2. An insulated support for collector rails, comprising a. bracket of aninverted channel type and providing depending flanges, an opening in theweb of said bracket, a headed bolt extending through said opening, aninsulated cover for the head of said bolt, said insulated cover beingadapted to rest on said bracket, a projec..

and said in- 3. An insulated support for collector rails, comprising abracket of an inverted channel type and providing depending ilanges, anopening in the web of said bracket, a headed bolt extending through saidopening, an insulated cover for the head of said bolt, said insulatedcover being adapted to rest on said bracket, a projection on said coverextending through the opening in said bracket and an annular groove atthe base of said projection, an insulating block having an enlargedopening through which said bolt extends, an annular ring on said blockadapted to t within the groove in said cover, clamping means associatedwith the end of said bolt for supporting a collector rail and providinga clearance space between the clamping meansA and said rail to allow forexpansion and contraction KNUTE P. MALM. GEORGE W. BLACK. WILLIAM O.HENRICKSON.

of the latter.

